Cot PEHD Rainplus 63/45° Cot PEHD Rainplus 63/45° is a type of plastic pipe manufactured by Rainplus. It is a high-density polyethylene (HDPE) pipe designed for use in underground drainage systems. It is designed to be resistant to corrosion and abrasion, and is suitable for use in high-pressure applications. It is available in a range of sizes, from 63mm to 450mm, and is available in a range of pressure ratings from 6 bar to 16 bar.